CN210451285U

CN210451285U - Reflow furnace

Info

Publication number: CN210451285U
Application number: CN201921245019.7U
Authority: CN
Inventors: 徐忠
Original assignee: Hefei Dongyou Electronic Technology Co ltd
Current assignee: Hefei Dongyou Electronic Technology Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-05
Anticipated expiration: 2029-08-02

Abstract

The utility model relates to a reflow oven, including the reflow oven body, reflow oven body both ends are equipped with entrance point and the exit end that extends to the inside of reflow oven body respectively, be equipped with the inside first furnace chamber of casing in respectively between entrance point and the exit end, second furnace chamber and third furnace chamber, be connected with the sliding rail on arranging the backup pad top in through the preheater on the first furnace chamber, the sliding rail is arranged and is connected with the export on the third furnace chamber along shells inner wall length direction, preheater one end is connected with cooling blower on being close to the convection heating pipe in the second furnace chamber, be equipped with the removal wheel of arranging the second furnace intracavity on the sliding rail, remove the equal fixed mounting in wheel both sides and have the clamping bar, and remove on wheel and the clamping bar outside all arrange the sleeve in, sleeve top one side is installed and is connected the dead lever with shells inner wall. Has the advantages that: the utility model discloses it is effectual to control the temperature, can carry out two-sided soft brazing operation, and degree of automation is high, and the practicality is strong.

Description

Reflow furnace

Technical Field

The utility model relates to a PCB board processingequipment technical field, concretely relates to reflow oven.

Background

Reflow ovens, also known as reflow ovens (reflow ovens ), are a device required by the SMT process in the electronics technology industry for achieving mechanical and electrical connection of soldered terminals or pins of surface mount components to pads of printed boards by re-melting of paste-like soft solder pre-dispensed onto the pads. The reflow oven is the last key process of SMT (surface mount technology), is a real-time process control, has complicated process changes, and relates to a plurality of process parameters, wherein the setting of a temperature curve is the most important and directly determines the reflow soldering quality.

In addition, the PCB is generally only single to one side to carry out processing operation in the reflow soldering process, the working efficiency is reduced, and meanwhile, finished products after processing cannot be automatically collected and processed, so that certain manpower is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a temperature control is effectual, and the heat-proof quality is strong, effectual the work piece of having guaranteed is heated evenly and improves work efficiency's backward flow stove, realizes through following scheme.

In order to realize the above purpose, the utility model discloses a technical scheme be: a reflow furnace comprises a reflow furnace body, wherein an inlet end and an outlet end extending into the reflow furnace body are respectively arranged at two ends of the reflow furnace body, a first furnace chamber, a second furnace chamber and a third furnace chamber which are arranged in a shell are respectively arranged between the inlet end and the outlet end, a sliding rail arranged at the top end of a supporting plate is connected on the first furnace chamber through a preheating furnace, the sliding rail is arranged along the length direction of the inner wall of the shell and is connected with an outlet on the third furnace chamber, a cooling fan is connected on a convection heating pipe which is close to the second furnace chamber at one end of the preheating furnace, a moving wheel arranged in the second furnace chamber is arranged on the sliding rail, clamping rods are fixedly arranged at two sides of the moving wheel, the moving wheel and the clamping rods are arranged on a sleeve, a fixing rod connected with the top end of the inner wall of the shell is arranged at one side of the top, the reversing wheel on the fixed rod is in meshed transmission with the steering teeth on the sleeve, and a rotating shaft on the reversing wheel is driven by a motor and is connected with the cross beam on the fixed rod.

Furthermore, an object sensor connected with the sliding rail is installed at a plate outlet of the outer wall of the third furnace chamber, the object sensor is electrically connected with a display on the reflow oven body through a data line, and one end of the object sensor is provided with a receiving box arranged at one end of the shell.

Furthermore, the reflow oven body is provided with a warning device connected with the display.

Furthermore, one end of the convection heating pipe is provided with a diversion trench arranged in the second furnace cavity.

Further, the rotation ratio of the reversing wheel and the steering tooth is kept consistent.

The technical effects of the utility model reside in that: the circuit board after being pasted enters the reflow oven body through the inlet end, the first furnace chamber, the second furnace chamber and the third furnace chamber are respectively arranged independently, the preheating oven carries out preheating treatment, then a cooling fan realizes constant temperature control, the convection heating pipe in the second furnace chamber can circulate heat by matching with a diversion trench on the inner wall, the uniformity of the workpiece during heating is ensured, when the workpiece needs to be heated in a two-side overturning way, a motor drives a rotating shaft on a fixed rod, a sleeve connected with a reversing wheel can rotate, the workpiece on a clamping rod can rotate, and heating operation of the other side is carried out, when the workpiece flows back, an object sensor transmits data to a display and is reminded by a warning device to automatically collect the workpiece through a receiving box, the service performance of the reflow oven is greatly improved, the temperature control effect is good, and double-side soft soldering operation can be carried out, the automation degree is high.

Drawings

FIG. 1 is a schematic structural view of a reflow furnace of the present invention;

FIG. 2 is a schematic sectional view of the reflow furnace in a front view;

fig. 3 is a schematic view of the connection of the reversing wheel of the present invention.

Reference numerals: 1-reflow oven body; 2-an inlet end; 3-an outlet end; 4-a first furnace chamber; 5-a second furnace chamber; 6-a third furnace chamber; 7-preheating a furnace; 8-a support plate; 9-a sliding rail; 10-convection heating tube; 11-a cooling fan; 12-a moving wheel; 13-a clamping bar; 14-a sleeve; 15-fixing the rod; 16-a reversing wheel; 17-a rotating shaft; 18-an object sensor; 19-a display; 20-a receiving box; 21-an alarm; 22-diversion trench.

Detailed Description

Referring to the attached drawings 1-3, a reflow oven comprises a reflow oven body 1, wherein an inlet end 2 and an outlet end 3 extending to the inside of the reflow oven body 1 are respectively arranged at two ends of the reflow oven body 1, a first oven cavity 4, a second oven cavity 5 and a third oven cavity 6 arranged in a shell are respectively arranged between the inlet end 2 and the outlet end 3, a sliding rail 9 arranged at the top end of a supporting plate 8 is connected on the first oven cavity 4 through a preheating oven 7, the sliding rail 9 is arranged along the length direction of the inner wall of the shell and is connected with an outlet on the third oven cavity 6, a cooling fan 11 is connected on a convection heating pipe 10 arranged in the second oven cavity 5 and close to one end of the preheating oven 7, a moving wheel 12 arranged in the second oven cavity 5 is arranged on the sliding rail 9, clamping rods 13 are fixedly arranged at two sides of the moving wheel 12, and the moving wheel 12 and the clamping rods 13 are arranged on a sleeve 14, a fixed rod 15 connected with the top end of the inner wall of the shell is installed on one side of the top end of the sleeve 14, a reversing wheel 16 on the fixed rod 15 is in meshed transmission with the steering teeth on the sleeve 14, and a rotating shaft 17 on the reversing wheel 16 is driven by a motor and is connected with a cross beam on the fixed rod 15.

The specific embodiment of the scheme is that a sliding rail 9 arranged at the top end of a supporting plate 8 is connected to the first furnace chamber 4 through a preheating furnace 7, the sliding rail 9 is arranged along the length direction of the inner wall of the shell and is connected with an outlet on the third furnace chamber 6, the sliding rail 9 is used for conveying workpieces to each furnace chamber to realize temperature control and heating operation, clamping rods 13 are fixedly arranged on two sides of a moving wheel 12, the moving wheel 12 and the clamping rods 13 are arranged on a sleeve 14, the clamping rods 13 on the moving wheel 12 are pre-clamped before the objects are turned over, and a reversing wheel 16 on a fixed rod 15 is driven by a motor to turn over the sleeve 14 on a steering tooth, so that the second furnace chamber 5 can better uniformly heat and the soft solder paste can be melted.

Preferably, the outlet of the outer wall of the third furnace chamber 6 is provided with an object sensor 18 connected with the sliding rail 9, the object sensor 18 is electrically connected with a display 19 on the reflow furnace body 1 through a data line, one end of the object sensor 18 is provided with a receiving box 20 arranged at one end of the casing, the object sensor transmits processed object data to the display, the reflow furnace body 1 is provided with an alarm 21 connected with the display 19, the alarm 21 can synchronously remind, the safety of the device is improved, and the receiving box 20 on the reflow furnace body 1 can also automatically collect the processed object data.

Preferably, one end of the convection heating tube 10 is provided with a diversion trench 22 disposed in the second furnace chamber 5, and the rotation ratio of the reversing wheel 16 and the steering gear is kept consistent, so that the reasonable rotation ratio is favorable for stable transmission between structural members.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A reflow oven comprises a reflow oven body (1), and is characterized in that an inlet end (2) and an outlet end (3) which extend into the reflow oven body (1) are respectively arranged at two ends of the reflow oven body (1), a first oven chamber (4), a second oven chamber (5) and a third oven chamber (6) which are arranged in a shell are respectively arranged between the inlet end (2) and the outlet end (3), the first oven chamber (4) is connected with a sliding rail (9) which is arranged at the top end of a supporting plate (8) through a preheating oven (7), the sliding rail (9) is arranged along the length direction of the inner wall of the shell and is connected with an outlet on the third oven chamber (6), one end of the preheating oven (7) is close to a convection heating pipe (10) in the second oven chamber (5) and is connected with a cooling fan (11), a moving wheel (12) which is arranged in the second oven chamber (5) is arranged on the sliding rail (9), remove the equal fixed mounting in wheel (12) both sides and have clamping rod (13), just remove wheel (12) and clamping rod (13) outside and all arrange sleeve (14) in, sleeve (14) top one side is installed and is connected dead lever (15) with casing inner wall top end, change wheel (16) on dead lever (15) with turn to tooth meshing transmission on sleeve (14), pivot (17) on change wheel (16) realize the drive through the motor and with crossbeam on dead lever (15) is connected.

2. Reflow oven according to claim 1, wherein an object sensor (18) connected to the sliding rail (9) is installed at the exit of the outer wall of the third oven chamber (6), the object sensor (18) is electrically connected to a display (19) on the reflow oven body (1) through a data line, and a receiving box (20) is installed at one end of the object sensor (18) and is disposed at one end of the housing.

3. Reflow oven according to claim 2, characterized in that the reflow oven body (1) is provided with a warning indicator (21) connected to the display (19).

4. Reflow oven according to claim 1, characterized in that the convection heating tube (10) is provided with a guiding gutter (22) at one end placed inside the second oven cavity (5).

5. Reflow oven according to claim 1, characterized in, that the turning ratio of the reversing wheel (16) and the turning tooth is kept consistent.